Submission #1121974

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121974		Yusif_Nazarli	Calvinball championship (CEOI15_teams)	C++17	30 / 100	68 ms	65536 KiB

teams

// Author: RufatM
#include <bits/stdc++.h>
using namespace std;
#define MOD 1000007
#define INF 1e9+7
#define ll long long
#define ull unsigned long long
#define vi vector<int>
#define vii vector<vector<int>>
#define mii map<int,int>
#define pb push_back
#define pii pair<ll,int>
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
const int N = 9000;
ll dp[N][N];
int n;
ll maxi = 0;
ll count(ll pos, ll max_team) {
    if(pos > n) return 0;
    if(pos == 0) return 1;
    return ((count(pos - 1, max_team) * max_team) % MOD +
            count(pos - 1, max_team + 1) % MOD) % MOD;
}
void solve() {
    cin >> n;
    vector<ll> a(n + 1);
    if(n > 14) {
        for(int i = 1; i <= n; i++) {
            cin >> a[i];
        }
        memset(dp, 0, sizeof(dp));
        dp[0][0] = 1;
        for(int i = 1; i <= n; i++) {
            for(int j = 1; j <= n; j++) {
                dp[i][j] = ((dp[i-1][j] * j % MOD) + dp[i-1][j-1]) % MOD;
            }
        }
        ll ans = 0;
        for(int i = 1; i <= n; i++) {
            ans = (ans + dp[n][i]) % MOD;
        }
        cout << ans << '\n';
        return;
    }
    ll res = 1;
    for(int i = 1; i <= n; i++) {
        cin >> a[i];
        for(int j = 1; j < a[i]; j++) {
            res = (res + count(n - i, maxi)) % MOD;
        }
        maxi = max(maxi, a[i]);
    }
    cout << res << '\n';
}
signed main() {
    fastio;
    int t = 1;
    //cin >> t;
    while(t--) {
        solve();
    }
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10